TY - JOUR
T1 - Untethered artificial muscles powered by wearable sweat-based energy generator
AU - Chen, Yandong
AU - Xue, Yueguang
AU - Liu, Wenhao
AU - Li, Shilin
AU - Wang, Xinlian
AU - Zhou, Weixian
AU - Zhang, Guanghui
AU - Liu, Kai
AU - Zhang, Hongjie
AU - Zhao, Yuliang
AU - Chen, Chunying
AU - Liu, Ying
N1 - Publisher Copyright:
© 2023
PY - 2023/4
Y1 - 2023/4
N2 - A sustainable power source is essential for soft artificial muscle to achieve untethered actuation, typically driven by rigid and bulky batteries that severely restrict their applications. Herein, a wearable sweat-based energy generator (SEG) is designed to directly power up a soft artificial muscle for establishing a self-powered conjunct system. The generator generates electricity from sweat based on the redox reaction, which shows a maximum power density of 18.3 μw cm−2 at a resistance of 0.3 kΩ with a small amount of sweat (0.2 mL). It is sufficient to activate the artificial muscles. Next, the sweat generator is integrated with artificial muscle to present an autonomously powered actuator, resulting in a bending motion based on converting electricity into movement by the electroactive polymer poly(vinylidene fluoride-hexafluoropropylene) (PVDF(HFP)) containing LiCl liquid. This autonomously powered artificial muscle can imitate finger motion, bionic flowers, and a self-powered gripper to manipulate tiny objects. Moreover, integrating artificial muscle and electromyogram sensors with sweat-based energy generators may have potential application values in repairing damaged muscle with closed-loop sensing and treatment. Thus, this autonomously powered artificial muscle can be of great interest for soft robotics, the biomedical field, and biomimetic devices.
AB - A sustainable power source is essential for soft artificial muscle to achieve untethered actuation, typically driven by rigid and bulky batteries that severely restrict their applications. Herein, a wearable sweat-based energy generator (SEG) is designed to directly power up a soft artificial muscle for establishing a self-powered conjunct system. The generator generates electricity from sweat based on the redox reaction, which shows a maximum power density of 18.3 μw cm−2 at a resistance of 0.3 kΩ with a small amount of sweat (0.2 mL). It is sufficient to activate the artificial muscles. Next, the sweat generator is integrated with artificial muscle to present an autonomously powered actuator, resulting in a bending motion based on converting electricity into movement by the electroactive polymer poly(vinylidene fluoride-hexafluoropropylene) (PVDF(HFP)) containing LiCl liquid. This autonomously powered artificial muscle can imitate finger motion, bionic flowers, and a self-powered gripper to manipulate tiny objects. Moreover, integrating artificial muscle and electromyogram sensors with sweat-based energy generators may have potential application values in repairing damaged muscle with closed-loop sensing and treatment. Thus, this autonomously powered artificial muscle can be of great interest for soft robotics, the biomedical field, and biomimetic devices.
KW - Closed-loop sensing and treatment
KW - Electromyogram monitoring
KW - Ionic electro-active polymers
KW - Sweat-based energy generator
KW - Untethered artificial muscle
UR - http://www.scopus.com/inward/record.url?scp=85146847198&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85146847198&partnerID=8YFLogxK
U2 - 10.1016/j.nantod.2023.101765
DO - 10.1016/j.nantod.2023.101765
M3 - Article
AN - SCOPUS:85146847198
SN - 1748-0132
VL - 49
JO - Nano Today
JF - Nano Today
M1 - 101765
ER -